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| author | Martin Kelly <mkelly@xevo.com> | 2017-12-05 11:15:49 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-12-16 10:33:47 +0100 |
| commit | bd424bd1757291ba95c4c47f35ea5c955a4b3e42 (patch) | |
| tree | e94c63f7cf7b0c8cb2904c7463293f1c37cb73b3 /drivers | |
| parent | 3e3dabd83630a66def375442c55fc78b9723e81a (diff) | |
| download | linux-stable-bd424bd1757291ba95c4c47f35ea5c955a4b3e42.tar.gz linux-stable-bd424bd1757291ba95c4c47f35ea5c955a4b3e42.tar.bz2 linux-stable-bd424bd1757291ba95c4c47f35ea5c955a4b3e42.zip | |
can: kvaser_usb: cancel urb on -EPIPE and -EPROTO
commit 6aa8d5945502baf4687d80de59b7ac865e9e666b upstream.
In mcba_usb, we have observed that when you unplug the device, the driver will
endlessly resubmit failing URBs, which can cause CPU stalls. This issue
is fixed in mcba_usb by catching the codes seen on device disconnect
(-EPIPE and -EPROTO).
This driver also resubmits in the case of -EPIPE and -EPROTO, so fix it
in the same way.
Signed-off-by: Martin Kelly <mkelly@xevo.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/can/usb/kvaser_usb.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/can/usb/kvaser_usb.c b/drivers/net/can/usb/kvaser_usb.c index 79422879f754..db1855b0e08f 100644 --- a/drivers/net/can/usb/kvaser_usb.c +++ b/drivers/net/can/usb/kvaser_usb.c @@ -1322,6 +1322,8 @@ static void kvaser_usb_read_bulk_callback(struct urb *urb) case 0: break; case -ENOENT: + case -EPIPE: + case -EPROTO: case -ESHUTDOWN: return; default: |